tscherning



March 27, lsza H TSCHERNING HOLDING MACHINE Filed May 10. 1926 3 Sheets-Sheet 1 Wlllllluummw Illlmlll l lfgw March 27, 1928. y 1,664,139

H. 'rscHERNlNG MOLDING MACHINE Filed May l0, 1926 3 Sheets-Sheet 2 VI gy: m L 'l March 27, 1928.

H. TSCHERNING MOLDING MAGHINE Filed May l0. 1926 5 Sheets-Sheet 3 Patented Mar. 27, 1928. `UNITED STATES] N 1,664,139 PATENT OFFICE.

HENRY TscHEnN-ING, OF FREEPOBT, ILLINOIS, AssIGNoR 'ro ARCADE MANInsAe'rUIa.n ING COMPANY, OF FREEPORT, ILLINOIS, A CORPORATION 0F ILLINOIS- HOLDING Application led May 10,

My invention relates, more particularly, to n sand moldingmachines, and as to certain features thereofI to such machines of a con-` struction adapted to be shifted on the floor along or over a pile of molding sand disposed thereon.

My Object, generally stated, is to provide improvements in molding machines, tov the end thatthe molding Operation may be .fa-

` cilitated. and perfect moldsbe made therefrom.

Certain of my more particular Objects are to provide in a molding machine particularly of the type whichis movable along the floor and is equipped with means for jolting the sand in the flask, for prevent-ing rebounding of the sand in the flask in the joltn ing operation and minimizing danger of breakage of the part against which the flasksupport strikes in the jolting operation; to provide in a n'iolding'machine of the squeezer type, for the ready and accurate positioning of the flask upon its support to ensure proper registration of the flask with the squeezer head and preferably to provide for the so centering of flasks of different sizes; to provide means readily accessible to the operator while at the machine, for receiving and supportingthe cope portion of a flask following the production of the mold; to provide amolding machine Which shall be so constructed ythat it may be caused to straddle a pile of the molding sand and be rollingly supported at opposite sides thereof to permit the machine to be moved along the pile, as desired, and be readily converted intol a machine of the non-straddling type; and to provide in a molding machine of the sand-squeezing type for the ready and convenient vertical adjustment of the squeezer head, as desired, without requiring the use of a wrench.

Referring to the accompanying drawings i Figure 1 is a view in front elevation of a molding machine -embodyingmy improve ments. Figure 2 is aplan view thereof. Figure 3 is an enlarged section taken at the line 3-3 on Fig. 2 and viewed in the direction of the arrows. Figure 4 is a view in side elevation of the machine, the machine, according to this figure being viewed from the left-hand side of Fig. 1; and Figure 5, a plan sectional view taken at the line 5 on Fig. 1 and viewed in the direction of the MACHINE.

1926. Serial No. 108,012.

arrow, this View showing the details of the flask centering, or gaging, device.

lnasmuch ascertain of the features of my invention relate to machines of the so called sand-straddling type, I have chosen to illustrate them in such a machine, the machine shown comprising a base portion 1() provided with depending spaced apart arms 11 in which one of the supporting wheels of the machine, and represented at 12, isrotatably mounted. Extending laterally from the member 1() is a bracket 13 in which a shaft 14 is mounted to extend at opposite` sides of the body 10, the support for this shaft at its other end being represented at 15. The shaft 14 adjacent to, and beyond, the bracket 13 is provided with another of the wheels for supporting the machine and represented `at 16. Extending laterally from the side of the base 10 opposite that at which the 'Wheel 16 is located, is an arch-shaped extension frame 17 which is detachably connected, by the screws 18, to the base 10 and is provided at its Outer end with a shaft 19 on which still another sup porting wheel for the machine and represented at 20, is journaled.

It may be here stated that in the use of the machine with the extension 17' thereon, the machine may be caused to be supported to straddle, at this extension, a pile of sand extending along the floor, and permit of the movement of the machine along the pile as the sand is removed therefrom in the operation of producing molds on the machine, the extension frame 17 by reason of its de tachable connection with the base 1() being disconnectable therefrom in which case the Wheel 2() would be removed from the shaft 19 and mounted upon the end of the shaft 14 opposite that carrying the wheel 16 thereby permitting the machine to be moved along the yside of a pile of sand, without straddling it.

The machine shown is adapted for both the jolting of the flask to pack the sand therein, and the elevating of the flask there-V after int-O engagement with a squeezer-head to further compress the sand, and to this end comprises a piston device 21 extending at its lower end into a cylinder 22 forming a squeezer-cylinder and shown as formed in the base member 10 in direct vertical alignment with the center of the supportmg wheel 12. The piston device referred to with the squeezer-head 39, it being understood that these gaging means vwould be provided at such an elevation, relative to the top 30, that a flask, positioned on this table, will extend at its side portion into the angle provided by the bar 50.

As al means for supporting, at apoint convenient to the operator of the machine, tools, flasks, patterns, and other articles which he may require in the producing of the flasks,

provide at the sideof the machine opposite that `at which the extension frame 17 extends, a platform, or bench, 54 which is pivoted at one end on a shaft 55 extending laterally from a bracket 56 secured to the base l0, and is provided at its opposite end with a supjiorting leg 56, braced at 57, and equipped at its lower end with a Awheel 58 adapted to bear upon the floor, the feature of pivoting this bench adapting the latter to be swung out of engagement with the floor when it is desired to move the machine.

The machine is also provided with means for supporting the cope at a point convenient to the operator at the machine, these means comprising a member presenting parallel vertically extending rod portions 59 which extend upwardly through openings in flanges of the bracket 33 and are located at opposite sides of the vertical axis of the co1- umn, the upper ends of these rods carrying set-screw-equipped collars 60 which rest upon the top of the bracket 33 and hold the rods 59 in suspended position, the lower ends of these rods terminating in a laterally7 ex-` tending yoke portion 61 shown as formed integrally with these rods at which portion a. cope may be supported, this cope-rest being so positioned relative to the bracket 33 that when the latter is swung to a position in which the head 39 is out of vertical alignment with the flask-table the yoke 61 extends directly above this table.

Referring to the operation of the machine, the operator places the pattern, which, by way of example, may be mounted ona sandmatch or follow-board, on the table 30 and places the flask in position thereon. He then fills the sand into the flask, and then opens the supply of compressed air to the cylinder 21 to effect the jarring of the piston mechanism and the flask thereon which operates to compact the sand in the flask. The excess sand is then struck off from the top of the flask and the bottom board placed on the mold therein. The operator then moves the flask into a position to engage the gaging device above described to properly center the flask on the table 30, and then swings the bracket 3,3 to the position shown in the drawings in which the squeezer-head 39 extends accurately centered relative to the flask. Compressed air is then supplied to the cylinder 22 to lift the piston 21 for forcing the mold, at the bottom board thereon,

'sand in the cope.

into engagement with the squeezer-head 39 'to effect the proper compressing of the sand in the flask. After lowering the piston device 21 to the position shown in Fig.3 by permitting the air to exhaust from the cylinder 22, the operator swings the bracket 33 out of the position last referred to, in.- verts the flask and, where a sand-match is employed, as above suggested, then removes the match which leaves the patterny in the molded sand in the drag-flask. The cope.- portion of the flask is then placed on the drag and filled with sand and the drag again movedfinto engagement with the gaging means referred to, the bracket 33 swung hack to the position shown in the drawings and air again admitted to the cylinder 22 to lift the piston devic4 21 and squeeze the 1 1e piston device 21 is again lowered and the bracket33 again swung out of the squeezing position, which carries the cope-rest 61 into a position in which it extends directly in front of the operator in position to receive the cope removed from the flask by the operator. After drawing the pattern from the drag the cope is replaced on the latter' to finish the mold.

It will be understood from the foregoing that by constructing the machine as shown and describedit may be readily converted from oneof the sand-straddling type to one of the non-straddling type, and vice versa, to adapt the machine to different conditions of use.

The feature of supporting the wheel 12 in closely spaced bearing members 11 provided directly below` the cylinder 22 and preferably centrally thereof as shown is of importance as sprin ing of the cylinder 22 with objectionable rebound and displacement of the sand `in the flask and likelihood of eventual crystallization and fracture, prevented. Furthermore, by locating this wheel directly beneath the piston and cylinder mechanism `which .is the heaviest part of the machine, the machine may be turned around with ease in shifting itover the floor and within a circle of very short radius, as it may be readily tilted by hand into a position in which it rests on the floor at its central and outermost wheels 12 and 20,

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respectively, onl l The feature of providing the nut-holding member 43 is of advantage in the adjustment of the squeezer-head 39 on the bracket'33. By providing for the holding of the nut 43 stationary, the clamping effect of the nuts 41 and 42 may be relieved by rotating the screw-rod 40 in counterclockwise direction in Fig. 2 and the clamping effect produced by rotating this rod in the other direction. llVith the clamping effect relieved, as stated, the operator may readily adjust the nut 42 on the rod 40, and the rod 40 on the nut 41, to cause the head 39 to extend above or below a (lili given position, ,and then simply by notait ing .the rod 40,'. .in vc@unterclsookWise :dinecf: tion in Fig. 2',- automaftically eiect ethe clamping of "the rodi 110i to :thelibrzrchet 33 by the engagement of the nuts 41 mrd 42 wi-tlin tine.:

currel by Letters Patent, is

l. a molding machine, the combination of a .supporting structiimte having Wheels by which it is adapted) Vto` besupported on a floor, anc qneezfizngmeanson saidustruc.-

ture coinlprising;v relatively mona-ble mein-.-

bers arranged one above lac other, one ot said supporting Wheels being,rl .centralized relative to ftheflongitudinnl axis of the lower one odi said; anenrbers.` l

2; In :a molding: mach-ine, the combina-` tion 'of a supporting structure,l a; sandpile# stradfdl'ing member: ,detachably.v connected with said structure, a. supporting Wheel on the outer .enft lot' said member, Wheels enz said struct-ure. coope 'ating` withy they wehe ony said: men'rber to support thematic/laine, sindj structure having; journaling part for wheel atthe .Iside thereot adjacent said member which latter Wheel when, in pla-ce on` .said journaling' part, and said member is detached from. said' structure, cooperates with the wheels on said. struc-ture to support thiemachine. l l

3. a n'roldingg,l n'iaehine,*they eombmn-v tion of. a? `flash-support, a standausdr arrfurged alongside oft'said support, a supporting` mem-Vv l porting member ein: suchposition that when;

said supporti11gJ member isy swung to a posi, tionl in which( said heard extends out of Ver tical alignment With sai-d iflaslt-supliortf said". cope-rest will extend; from said supporting member toward said iasl1:-su} 3port.

4. In aV moldingl machine, the combination,V

of a; flash-support, a standard arranifredi alongside ot saldi support, aesuppottingmember on said standfaidi,I a sqneezer-head `on said si'lpporting member, said supp(nti'ingfiY member being swinrgable on said upright about a vertical axismltoA and out ot position in which sind, headl extends directly above said support, said, support; and; head' modiiitiecl andi altered? with-` Y Lam-,13H

being' yrelatively'movable toward: eacim 'other to merorin the* squeezing; operation, `:mdp-fa cope-rest. extending lmemlly nom. ysaid sstepporti-ng member in suela position tlmat when, said supporting member ,is swung't a; position in which said head2 extends out ofV ventical alignment with said flask-support, smid cope-rest will exiend from said swppovting. member bewaard said flask-support, said restbeing inl the tornil of a yoke extending laterally ol? said uprigl'lt and havingY up Wardily .extending rod-portions Vat which: sind cope-restis connected with said support.

5. In amoldingy mac-hinetlte combination of. a flask-support, a standard arranged alongside Voit said support, a suppo'ting menu` ber on said stzmdard, a sq-ueezer-head on: said supporting member, said. supporting member being swing-gable Jon. said upnight about m rertical axis into and out of a position. in; which said head: extendsdirectly abone said.

support, said support and Vlie-d being relai tively movable toward each other taperiforinithe sqjueezingoperation, and a. cope i restexteneling; laterally iinom said support-- ing i'lenlber liny such position that when: said supporti-ng memberis swung` tov a position Y in which said head extends out ost verticali alignment WithV said flask-support saidcope rest will extend from said' supporting' mem-- ber toward said flask-support, seid! cope-rest4 being adjustable vertically to cause it to; ex:- tend'atdiffierent heights. y

6. In a, molding machine, thecombinatom of a trame, flask-supportingpiston and eyl-4 inder mechanism; on mid; trame, and supl-` porting wheels on; said fname, one of sad wheels being so locazted that it bears more oli the load by said meclmnismftham. is borne by any of the others of said Wheels. Y

l,7 In a. molding machine,` thecornwbinnftienv eta, frame, flask-supporting pistnn ain-daylinder mechanism on' said trarne, and sup porting` wheels on said frame, one of said vs-heelfs being'` substantially centralized rela-- tive tothe Verticali` axis of said mechanism..

8l. In afmoldiinigmachinmihe; tombinaftioit oli ai famme-piston. and cylinder jolt mech-- :mism on said, trame` Wheels supporting said?. l'mme, and; journalling supports for one of said wheels depending from the cylinder of seid mechanism and located directly beneath sai-cl cylinder and between which said wheel; ispositioned.

9,-. In a` moiding machine, the combnatiom of an upright, av flask support adjacent to andI located to oney side orf, said upright, a; sqneezer-head on said' upright, seid support and head being` relatively movable toward. each other, and a gagfingflevice rotatably mounted our said;` upright to swingjin a horif zontail plane and engageable by the flask (ma saiid' support for centering the flask rela;-A ti-ve to saidl squeezer-head. Y

10` In amolding mechine,.the combination llt) of an upright, a. flask support adjacent to,

and located to one side of, said upright, a

squeezer-head on said upright, said support and head being relatively movable toward each other, and a gaging-device mounted for vertical adjustnient on said upright and engageable by the flask on said support ttor centering the flask relative to said squeezerhead.

11. In a molding machine, the combination of an upright, a fla-sk support adjacent to, and located to one side of, said upright, a squeezer-head on said upright, said support and head being relatively movable toward each other, and a gaging-device rotatably mounted on said upright to swing in a hor1zontal plane and adjustable vertically thereon and engageable by the flask on said support for centering the flask relative to said squeezer head.

12. In a molding machine, the combination of an upright, a flask support adjacent to, and located to one side of', said upright, a squeezer-head on said upright, said support and head being relatively movable toward each other, and a gagmg device ro? tatably mounted on said upright to swing in a horizontal plane and presenting an interior angle for engagement by a corner of thevflask on said support and operating to center the flask relative to said squeezer head.

13. In a molding machine, the combination of an upright, a flask support adjacent to, and located to one side of, said upright, a squeezer-head on said upright, said support and head being relatively movable to- `Ward each other, and a gagingsdevice ro tatably mounted on said upright to swing in a horizontal plane and engageable by the tatably mounted on said upright to swing in a horizontal plane and engageable by the flask on said support for centering the flask relative to said squeezer head, said gaging device being formed of' sections adjustable relative to each other in a plurality of direct-ions.

15. In a moldingr machine, the combination of an upright, a flask support adjacent to, and located to one side of, said upright, a squeezenhead on said upright, said support and head being relatively movable to ward each other, and a gaging-device rotatably mounted on said upright to swing in a horizontal plane and engageable by the flask on said support for centeringr the flask relative to said -squeezer-head, aid gagingdevice being formed of sections at one of which it is supported on said upright and at which it is adjustable toward and away from said upright, the other oit said sections being in the form ot a bar adjustable on said rst-referred-to section at an angle to the line of adjustment ot' the latter on said upright and presentingr an interior angle portion to receive a corner of the flask on said upright.

HENRY TSCHERNING. 

